ALSA: vxpocket: Fix resource leak in vxpocket_probe error path

When vxpocket_config() fails, vxpocket_probe() returns the error code
directly without freeing the sound card resources allocated by
snd_card_new(), which leads to a memory leak.

Add proper error handling to free the sound card and clear the
allocation bit when vxpocket_config() fails.

Fixes: 15b99ac ("[PATCH] pcmcia: add return value to _config() functions")
Signed-off-by: Haotian Zhang <vulab@iscas.ac.cn>
Link: https://patch.msgid.link/20251215042652.695-1-vulab@iscas.ac.cn
Signed-off-by: Takashi Iwai <tiwai@suse.de>

Author: ISCAS-Vulab

sound/pcmcia/vx/vxpocket.c

@@ -284,7 +284,13 @@ static int vxpocket_probe(struct pcmcia_device *p_dev)
 
 	vxp->p_dev = p_dev;
 
-	return vxpocket_config(p_dev);
+	err = vxpocket_config(p_dev);
+	if (err < 0) {
+		card_alloc &= ~(1 << i);
+		snd_card_free(card);
+		return err;
+	}
+	return 0;
 }
 
 static void vxpocket_detach(struct pcmcia_device *link)